---
kind: "section"
citation: "42 C.F.R. § 84.158"
title: "42"
number: "84.158"
heading: "Exhalation valve leakage test."
url: "https://uscodex.org/cfr/42/84.158"
---

# §84.158. Exhalation valve leakage test.

- (a) Dry exhalation valves and valve seats will be subjected to a suction of 25 mm. water-column height while in a normal operating position.
- (b) Leakage between the valve and valve seat shall not exceed 30 milliliters per minute.

## Notes

### Authority

Authority: 29 U.S.C. 651 et seq.; 30 U.S.C. 3, 5, 7, 811, 842(h), 844.

### Source

Source: 60 FR 30355, June 8, 1995, unless otherwise noted.